US3311949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blow molding hollow articles with conical protrusions
Assignee: Union Oil Company of California
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Filing: 1965-06-17
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Granted: 1967-04-04
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Expires: 1985-06-17
Abstract
No abstract record available.
Inventors
- 👤 Kevin E Moran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
AN APPARATUS FOR PRODUCING, HOLLOW ARTICLES WITH CONICAL PROTRUSIONS FROM PLASTIC MATERIALS COMPRISING, IN COMBINATION, AN EXTRUDING DEVICE ADAPTED TO EXTRUDE MOLDABLE PLASTIC MATERIAL IN UNCONFINED TUBULAR FORM, A MOLD UNIT HAVING A CAVITY CORRESPONDING IN SHAPE WITH THE HOLLOW ARTICLE TO BE MADE, SAID MOLD CAVITY BEING ADAPTED TO RECEIVE THE TUBULAR PLASTIC MATERIAL WHEN SAID MOLD IS POSITIONED SUBSTANTIALLY ADJACENT TO THE OUTLET PORTION OF SAID EXTTRUDING DEVICE, MEANS FOR CLOSING THE END OF SAID TUBULAR PLASTIC MATERIAL, MEANS FOR INTORDUCING PRESSURE INTO SAID TUBULAR PLASTIC MATERIAL TO BLOW IT INTO MOLDING CONTACT WITH SAID MOLD SO AS TO FORM A HOLLOW ARTICLE WHILE SAID TUBULAR PLASTIC MATERIAL IS INTEGRALLY LJOINED WITH PLASTIC MATERIAL IN SAID EXTRUDING DEVICE, MEANS FOR SEPARATING SAID MOLD UNIT AND SAID KEXTRUDING DEVICE WHILE SAID EXTRUDING DEVICE CONTINUES TO EXTRUDE MOLDABLE PLASTIC MATERIAL TO FORM A CYLINDRICAL NECK ON SAID ARTICLE, MEANS TO ROTATE SAID EXTRUDING DEVICE AND MOLD UNIT RELATIVE TO EACH OTHER AND TO THEREBY DECREASE THE CROSS-SECTIONAL AREA OF SAID CYLINDRICAL NECK AT A POINT ROMOTE FROM SAID ARTICLE TO FORM A CONICAL NECK ON SAID ARTICLE AND MEANS FOR SEVERING THE ARTICLE WITH A CONICAL NEXK FROM THE REMAINDER OF SAID TUBE.
Claim 2
Independent Claim
203 words
AN APPARATUS FOR PRODUCING, HOLLOW ARTICLES WITH CONICAL PROTRUSIONS FROM PLASTIC MATERIALS COMPRISING, IN COMBINATION, AN EXTRUDING DEVICE ADAPTED TO EXTRUDE MOLDABLE PLASTIC MATERIAL IN UNCONFINED TUBULAR FORM, A MOLD UNIT HAVING A CAVITY CORRESPONDING IN SHAPE WITH THE HOLLOW ARTICLE TO BE MADE, SAID MOLD CAVITY BEING ADAPTED TO RECEIVE THE TUBULAR PLASTIC MATERIAL WHEN SAID MOLD IS POSITIONED SUBSTANTIALLY ADJACENT TO THE OUTLET PORTION OF SAID EXTTRUDING DEVICE, MEANS FOR CLOSING THE END OF SAID TUBULAR PLASTIC MATERIAL, MEANS FOR INTORDUCING PRESSURE INTO SAID TUBULAR PLASTIC MATERIAL TO BLOW IT INTO MOLDING CONTACT WITH SAID MOLD SO AS TO FORM A HOLLOW ARTICLE WHILE SAID TUBULAR PLASTIC MATERIAL IS INTEGRALLY LJOINED WITH PLASTIC MATERIAL IN SAID EXTRUDING DEVICE, MEANS FOR SEPARATING SAID MOLD UNIT AND SAID KEXTRUDING DEVICE WHILE SAID EXTRUDING DEVICE CONTINUES TO EXTRUDE MOLDABLE PLASTIC MATERIAL TO FORM A CYLINDRICAL NECK ON SAID ARTICLE, MEANS TO ROTATE SAID EXTRUDING DEVICE AND MOLD UNIT RELATIVE TO EACH OTHER AND TO THEREBY DECREASE THE CROSS-SECTIONAL AREA OF SAID CYLINDRICAL NECK AT A POINT ROMOTE FROM SAID ARTICLE TO FORM A CONICAL NECK ON SAID ARTICLE AND MEANS FOR SEVERING THE ARTICLE WITH A CONICAL NEXK FROM THE REMAINDER OF SAID TUBE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |